Hair loss breakthrough? supplement promises thicker, stronger hair in 3 months
Symptom relief
Completed
This study tested a dietary supplement containing biotin, collagen, and keratin in 80 adults aged 21-50 with self-perceived thinning hair. Over three months, participants took either the supplement or a placebo. The supplement aimed to reduce hair shedding and increase hair thick…
Phase: NA • Sponsor: Nutra Harmony LLC • Aim: Symptom relief
Last updated May 17, 2026 13:59 UTC